CVE-2021-23240

ADVISORY - nist

Summary

selinux_edit_copy_tfiles in sudoedit in Sudo before 1.9.5 allows a local unprivileged user to gain file ownership and escalate privileges by replacing a temporary file with a symlink to an arbitrary file target. This affects SELinux RBAC support in permissive mode. Machines without SELinux are not vulnerable.

EPSS Score⁠: 0.00172 (0.391)

Common Weakness Enumeration (CWE)

ADVISORY - nist

CWE-59⁠

Improper Link Resolution Before File Access ('Link Following')

ADVISORY - redhat

CWE-367⁠

Time-of-check Time-of-use (TOCTOU) Race Condition

CWE-59⁠

Improper Link Resolution Before File Access ('Link Following')

Impacted images

Advisories

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